Automatic comparison calibration device with ratio determination

Details Automatic comparison calibration device with ratio determination Automatic comparison calibration device with ratio determination

1977-11-10

1979-05-15

Strecker, Gerard R.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

328161, 364850, G01R 1910, G06G 716

Patent

active

041550382

ABSTRACT:
Apparatus for comparing an unknown signal with a reference signal is adapted to determine their ratio and, where a variation exists, to compensate the unknown signal to achieve unity ratio. The apparatus includes circuit means connectable to the signals for obtaining sum and difference signals. Means responsive to the sum and difference signals produce a control signal representing the product of these signals and feedback means responsive to the control signal generate a time-averaged feedback signal that is a measure of the ratio of the mean squares of the unknown and reference signals. Control means are disposed in the path of the unknown signal and are responsive to the feedback signal for varying the amplitude of the unknown signal to equilibrate and stabilize the apparatus when the mean squares of the reference signal and the compensated unknown signal are equal. A method for determining the ratio is disclosed together with embodiments of the apparatus which include an analog signal type as well as an analog-digital hybrid form.

REFERENCES:
patent: 3100097 (1963-08-01), Woltersdorf
patent: 3652930 (1972-03-01), Sugiyama et al.
patent: 3652945 (1972-03-01), Nakane et al.
patent: 3789663 (1974-02-01), Gold
patent: 3795918 (1974-03-01), Sunderland

Affiliated with

Also associated with

Rating

Automatic comparison calibration device with ratio determination does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic comparison calibration device with ratio determination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic comparison calibration device with ratio determination will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1100176